LARGE SANDED PERCH COVERS x3 - These perch covers will file the nails of your bird. A bird with too long nails might have cramps and osteoarthritis because of its bad position on the perch. HYGIENIC COVERS FOR PERCHES - These covers for bird cage perches help to keep your feathered buddy's nails clean and trim, so you have less maintenance work to do. ALL LIFE STAGES - Provides a natural and easy way to care for your pet's nails.Each cover provides a sanitary place for your pet to stand on and hang out. EASY TO INSTALL - Size 3/4" Diameter X 9" Long,fit 0.75" - 1" diameter perches,covers can be trimmed to fit shorter perches Disposable - Change regularly the sanded perch covers.